Abstract: One main trend in the development of aeronautic static inverter (ASI) is its modularization, generalization, and standardization. This article made a study on achieving higher efficiency, lighter system weight, higher reliability, and maintainability of ASI. Because of their good power expansibility and high efficiency and reliability, the push-pull forward converter and dual buck inverter are selected as the main topology to develop the DC-DC converter module and the DC-AC inverter module, and four ASI basal modules are combined by them. The four ASI modules have improved the efficiency by 4.5% as compared with similar products manufactured at home and abroad, and have obvious advantages in terms of weight, volume, reliability, and maintainability.

Key words: electric inverter, standardization, modularization, push-pull forward, dual buck inverter